TENNIS-OPEN/

Serena Williams of the U.S. takes a selfie with her trophy as she poses in the dressing room after winning the women\'s singles final match against Lucie Safarova of the Czech Republic during the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 6, 2015. REUTERS/Corinne Dubreuil/FFT/Pool Picture Supplied by Action Images

TENNIS-OPEN/

Serena Williams of the U.S. poses with her trophy and her dog named Chip in the dressing room after winning the women\'s singles final match against Lucie Safarova of the Czech Republic during the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 6, 2015. REUTERS/Corinne Dubreuil/FFT/Pool Picture Supplied by Action Images

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Jun 7, 2015; Paris,France; Stan Wawrinka (SUI) in the locker room after winning the men\'s final against Novak Djokovic (SRB) on day 15 of the 2015 French Open at Roland Garros. Mandatory Credit: Pool Photo CHRISTOPHE SAIDI / FFT

TENNIS-OPEN/

Serena Williams of the U.S. poses with her trophy and her dog named Chip in the dressing room after winning the women\'s singles final match against Lucie Safarova of the Czech Republic during the French Open tennis tournament at the Roland Garros stadium in Paris, France, June 6, 2015. REUTERS/Corinne Dubreuil/FFT/Pool Picture Supplied by Action Images

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Jun 7, 2015; Paris,France; Stan Wawrinka (SUI) in the locker room after winning the men\'s final against Novak Djokovic (SRB) on day 15 of the 2015 French Open at Roland Garros. Mandatory Credit: Pool Photo CHRISTOPHE SAIDI / FFT

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Jun 7, 2015; Paris,France; Stan Wawrinka (SUI) with his coach Magnus Norman in the locker room after winning the men\'s final against Novak Djokovic (SRB) on day 15 of the 2015 French Open at Roland Garros. Mandatory Credit: Pool Photo CHRISTOPHE SAIDI / FFT